Gamma-ray-energy-spectrum measurement method at high counting rate

A technology of gamma energy spectrum and high count rate, which is applied in the field of energy spectrum measurement, can solve the problem that the energy resolution of high count rate spectrometer is difficult to guarantee, and achieve the effect of simple system structure, low cost, and easy popularization and application

Active Publication Date: 2014-02-26
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0008] In order to overcome the limitation of the traditional electronic system on the measurement count rate of the spectrometer and solve the problem that the energy resolution of the conventional high count rate spectrometer is difficult to guarantee, the present invention provides a ray energy spectrum measurement suitable for high count rate and conventional count rate method

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  • Gamma-ray-energy-spectrum measurement method at high counting rate
  • Gamma-ray-energy-spectrum measurement method at high counting rate
  • Gamma-ray-energy-spectrum measurement method at high counting rate

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Embodiment Construction

[0036] Below by example the present invention is further illustrated.

[0037] In the gamma energy spectrum measuring method under high counting rate, the output of the detector is firstly connected with the input of a high-speed analog-to-digital conversion device, and the output of the high-speed analog-to-digital conversion device is connected with the input of a digital signal processing device.

[0038] Before the measurement, several ray sources with known energy are used to calibrate the system, and the conversion relationship between signal integral charge and ray energy is obtained.

[0039] Then the output current signal of the detector is directly converted into a digital signal, and the digital signal processing device processes the converted digital signal, extracts information representing the energy of the radiation to be measured, and gives the energy amplitude spectrum of the radiation to be measured.

[0040] figure 2 It is a schematic diagram of an applica...

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Abstract

The invention discloses a gamma-ray-energy-spectrum measurement method at a high counting rate. Firstly, output of a detector is connected with input of a high-speed analog-digital converting device and output of the high-speed analog-digital converting device is connected with input of a digital-signal processing device. Output current signals of the detector are directly converted into digital signals. The converted digital signals are processed and information representing energy of to-be-detected rays is extracted so that the energy spectrum of to-be-detected Gamma rays is given. The gamma-ray-energy-spectrum measurement method at the high counting rate solves problems that spectrometer measurement counting rate is limited by traditional spectrometer electronic systems and energy resolution of conventional high-counting-rate spectrometers is hard to ensure. The gamma-ray-energy-spectrum measurement method at the high counting rate is capable of realizing gamma-ray-energy-spectrum measurement at a counting rate of 106cps or higher and ensuring excellent energy resolution.

Description

technical field [0001] The invention relates to the technical field of energy spectrum measurement, in particular to a gamma energy spectrum measurement method at a high count rate. Background technique [0002] The energy parameter is one of the important parameters of the particles or rays emitted by nuclear radiation. In the basic research of nuclear physics and various applications of nuclear radiation measurement, the energy information of the rays is obtained, that is, the measurement of the nuclear radiation energy or the intensity of nuclear radiation varies with the energy. The distribution relationship (that is, the energy spectrum) is of great significance. [0003] Conventional energy spectrum measurement methods use spectrometers based on ionizing radiation, such as sodium iodide spectrometers, high-purity germanium spectrometers, etc. Spectrometers based on ionizing radiation have the advantages of high energy measurement accuracy, modular system design, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/36
Inventor 谭新建宋朝晖渠红光卢毅张侃
Owner NORTHWEST INST OF NUCLEAR TECH
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